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科技英语的句子特点:
1)逻辑联系语。 一般出现在句子,句群,段落之间,当句子较长时 句子中间也有。 列举:first,second, begin with ,next 增补:and ,and also, in addition, futher more 转折或对比 :but, yet, in fact 原因或结果: hence, for the reason , as a result 解释:that is to say 总结:in all, in conclusion。
工件的温升如果过度的话会降低产品的质量,影 响表面粗糙度和尺寸精度,会引起刀具的过度磨 损,会导致我们不希望的材料金相学的改变
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4)Aluminum develops a thin (a few atomic layers), strong, and adherent hard-oxide film (Al2O3) that better protects the surface from further environmental corrosion. Titanium develops a film of titanium oxide (TiO2). A similar phenomenon occurs in stainless steels, which (because of the chromium present in the alloy) develop a protective film on their surface.
例如从齿轮传到轴或者通过啮合的轮齿传到另一个齿轮从三角皮带传到皮带轮或者从凸轮传到从145newtonslawnewtonsthreelaws第一定律如果作用在一个质点上的所有外力平衡那么这个质点保持原来的静止或者匀速直线运动状态不变